How do I solve this question

Answer:
6) x = 6.75
7) x = 27.29
Step-by-step explanation:
cross multiply
6)_______________________
9/16 = x/12
16x = 108
divide by 16
x = 6.75
7)_______________________
7/11 = 18/x + 1
7x + 7 = 198
-7 -7
7x = 191
divide by 7
x = 27.29
Hope this helped! Have a nice day, and plz mark as brainliest if correct!!!
-Lil G